Sloan sits next to 4 phonetic neighbors — Sloane, Lane, and Stone are the closest matches by sound. Most share Sloan's Scottish cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"raider, warrior"
"famous warrior"
"joy, happiness"
"hollow, empty"
"oak woodland settlement"
"son of Elijah"
"little dark one (from Latin niger)"
"to overcome, conquer"
"enlightenment, awakening"
"God is most high"
"majestic, venerable"
"God is gracious (via Eoin/John)"
"pale, holy"
"servant, worshipper of God"
"son of Brice; son of Bryce"
"beauty, adornment, grace"
"remembered by God"
"dear, beloved"
"little red-haired one"
"clay, mortal man"
"handsome"
Similar sound: These names share phonetic patterns with Sloan — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Scottish Gaelic origins, giving them the same cultural heritage as Sloan.
Rhythm: Sloan is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.